yichael_smartbow/Assets/BowArrow/Scenes/GameChallenge/DayToNight.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DayToNight : MonoBehaviour
{
    [SerializeField] Material daySkyboxMaterial;
    [SerializeField] Material nightSkyboxMaterial;
    void Awake()
    {
        if (GameMgr.gameType == 5) {
            EnterNight();
        } else {
            EnterDay();
        }
    }

    public void EnterDay()
    {
        RenderSettings.fogStartDistance = 25;
        RenderSettings.fogColor = new Color(124f/255, 177f/255, 221f/255);
        RenderSettings.ambientMode = UnityEngine.Rendering.AmbientMode.Flat;
        RenderSettings.ambientSkyColor = Color.white;
        RenderSettings.skybox = daySkyboxMaterial;
        foreach (Transform item in transform) item.gameObject.SetActive(false);
        transform.Find("DayElements").gameObject.SetActive(true);
    }

    public void EnterNight()
    {
        RenderSettings.fogStartDistance = 5;
        RenderSettings.fogColor = new Color(37f/255, 52f/255, 63f/255);
        RenderSettings.ambientMode = UnityEngine.Rendering.AmbientMode.Flat;
        RenderSettings.ambientSkyColor = new Color(160f/255, 90f/255, 90f/255);
        RenderSettings.skybox = nightSkyboxMaterial;
        foreach (Transform item in transform) item.gameObject.SetActive(false);
        transform.Find("NightElements").gameObject.SetActive(true);
    }
}